check engine MERCEDES-BENZ GLA 2019 User Guide

swerving. Trailers with a high center of grav-
ity can tip over before ESP®can detect this.
There is a risk of an accident.
Always adapt your driving style to the pre-
vailing road and weather conditions.
If your vehicle with trailer (vehicle/trailer com-bination) begins to lurch, you can only stabilizethe vehicle/trailer combination by depressingthe brake firmly.
ESP®trailer stabilization is active abovespeeds of about 65 km/h.
ESP®trailer stabilization does not work if
ESP®is deactivated or disabled because of amalfunction.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pressureon the rear wheels to improve driving stabilitywhile braking.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
GWARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases
the risk of skidding and an accident.
You should therefore adapt your driving
style to the different handling characteris-
tics. Have the brake system checked at a
qualified specialist workshop.
Please observe the information on warningand indicator lamps (Ypage 233)
(Ypage 233) as well as on display messages(Ypage 206).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety andoffers increased braking comfort. In additionto the braking function, ADAPTIVE BRAKE also
has the HOLD function (Ypage 165) and hillstart assist (Ypage 128).
STEER CONTROL
General information
STEER CONTROL helps you by transmitting anoticeable steering force to the steering wheelin the direction required for vehicle stabiliza-tion.
This steering assistance is provided in particu-lar if:
Rboth right wheels or both left wheels are ona wet or slippery road surface when youbrake
Rthe vehicle begins to skid
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
No steering assistance is provided from STEERCONTROL, if:
RESP®is malfunctioning
Rthe steering is malfunctioning
If ESP®is malfunctioning, you will be assistedfurther by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevents your vehicle frombeing started without the correct SmartKey.
XTo activate with the SmartKey:removethe SmartKey from the ignition lock.
XTo activate with KEYLESS-GO start-func-tion or KEYLESS-GO:switch the ignition offand open the driver's door.
XTo deactivate:switch on the ignition.
When leaving the vehicle, always take theSmartKey with you and lock the vehicle. Any-one can start the engine if a valid SmartKeyhas been left inside the vehicle.
iThe immobilizer is always deactivatedwhen you start the engine.
In the event that the engine cannot be star-ted (yet the vehicle's battery is charged),
Protection against theft67
Safety
Z

XTo close the tailgate automatically fromoutside the vehicle:if the SmartKey islocated in the immediate vicinity of the vehi-cle, press theTbutton on the SmartKey(Ypage 79).When the tailgate closes you can thenrelease the button.
KEYLESS-GO
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is aSmartKey in the vehicle.
Locking and unlocking
You can start, lock or unlock the vehicle usingKEYLESS-GO. To do this, you only need carrythe SmartKey with you. You can combine thefunctions of KEYLESS-GO with those of a con-ventional SmartKey. Unlock the vehicle byusing KEYLESS-GO, for instance, and lock itusing the7button on the SmartKey.
The driver's door and the door at which thehandle is used, must both be closed. TheSmartKey must be outside the vehicle. Whenlocking or unlocking with KEYLESS-GO, thedistance between the SmartKey and the corre-sponding door handle must not be greaterthan three feet (one meter).
A check which periodically establishes a radioconnection between the vehicle and theSmartKey determines whether a valid Smart-Key is in the vehicle. This occurs, for example:
Rwhen starting the engine
Rwhile driving
Rwhen the external door handles are touched
Rduring convenience closing
XTo unlock the vehicle:touch the inner sur-face of the door handle.
XTo lock the vehicle:touch sensor sur-faceCorD.
Make sure that you do not touch the innersurface of the door handle.
XConvenience closing feature:touchrecessed sensor surfaceDfor an extendedperiod.
Further information on the convenienceclosing feature (Ypage 85).
XTo unlock the tailgate:pull tailgate han-dleC.
Deactivating and activating
If you do not intend to use the vehicle for alonger period of time, you can deactivate KEY-LESS-GO. The SmartKey will then use very lit-tle power, thereby conserving battery power.For the purposes of activation/deactivation,the vehicle must not be nearby.
XTo deactivate:press the7button onthe SmartKey twice in rapid succession.The indicator light on the SmartKey flashestwice briefly then one long flash, then KEY-LESS-GO is deactivated (Ypage 72).
XTo activate:press any button on the Smart-Key.
or
XInsert the SmartKey into the ignition lock.KEYLESS-GO and all of its associated fea-tures are available again.
70SmartKey
Opening and closing

KEYLESS-GO start function
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is aSmartKey in the vehicle.
Changing the settings of the locking
system
You can change the settings of the lockingsystem. This means that only the driver's doorand the fuel filler flap are unlocked when thevehicle is unlocked. This is useful if you fre-quently travel on your own.
XTo change the setting:press and hold the6and7buttons simultaneously forapproximately six seconds until the batteryindicator lamp flashes twice (Ypage 72).
If the setting of the locking system is changedwithin the signal range of the vehicle, pressingthe7or6button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock:press the6button once.
XTo unlock centrally:press the6buttontwice.
XTo lock centrally:press the7button.
The KEYLESS-GO function is changed as fol-lows:
XTo unlock the driver's door:touch theinner surface of the door handle on the driv-er's door.
XTo unlock centrally:touch the inner sur-face of the door handle on the front-passenger door or the rear door.
XTo lock centrally:touch the outer sensorsurface on one of the door handles.
XTo restore the factory settings:press andhold the6and7buttons simultane-ously for approximately six seconds until thebattery check lamp flashes twice(Ypage 72).
Mechanical key
General notes
If the vehicle can no longer be locked orunlocked with the SmartKey or KEYLESS-GO,use the mechanical key.
If you use the mechanical key to unlock andopen the driver's door or the trunk lid, theanti-theft alarm system will be triggered(Ypage 68).
There are several ways to turn off the alarm:
XTo deactivate the alarm with the key:press the6or7button on the key.
or
XInsert the SmartKey into the ignition lock.
or
XTo deactivate the alarm with KEYLESS-GO:press the Start/Stop button in the igni-tion lock. The SmartKey must be in the vehi-cle.
or
XLock or unlock the vehicle using KEYLESS-GO. The SmartKey must be outside the vehi-cle.
If you unlock the vehicle using the mechanicalkey, the fuel filler flap will not be unlockedautomatically.
XTo unlock the fuel filler flap:insert theSmartKey into the ignition lock.
Removing the mechanical key
SmartKey71
Opening and closing
Z

ProblemPossible causes/consequences andPPSolutions
You can no longer lockor unlock the vehicleusing KEYLESS-GO.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if neces-sary (Ypage 72).
If this does not work:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of theSmartKey.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
If the vehicle can also not be locked/unlocked using the remotecontrol function:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
The engine cannot bestarted using the Smart-Key.
The on-board voltage is too low
XSwitch off non-essential consumers, e.g. seat heating or interiorlighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary(Ypage 294).
or
XJump-start the vehicle (Ypage 295).
or
XConsult a qualified specialist workshop.
The engine cannot bestarted using the Start/Stop button. The Smart-Key is in the vehicle.
The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if neces-sary (Ypage 72).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
74SmartKey
Opening and closing

XTurn the mechanical key counter-clockwiseas far as it will go to positionG.The door is unlocked.
XTurn the mechanical key back and removeit.
XInsert mechanical key into the SmartKey(Ypage 72).
Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with theSmartKey or KEYLESS-GO, use the mechanicalkey.
XOpen the driver's door.
XClose the front-passenger door, the reardoors and the tailgate.
XPress the locking button on the driver’s door(Ypage 75).
XCheck whether the locking knobs on thefront-passenger door and the rear doors arestill visible. Press down the locking knobs byhand, if necessary.
XClose the driver's door.
XTake the mechanical key out of the Smart-Key (Ypage 71).
XInsert the mechanical key into the lock ofthe driver's door as far as it will go.
XTurn the mechanical key clockwise as far asit will go to positionG.
XTurn the mechanical key back and removeit.
XMake sure that the doors and the tailgateare locked.
XInsert mechanical key into the SmartKey(Ypage 72).
iIf you lock the vehicle as described above,the fuel filler flap is not locked. The anti-theft alarm system is not armed.
Cargo compartment
Important safety notes
GWARNING
Parts of the body could become trapped
during automatic closing of the tailgate.
Moreover, people, e.g. children, may be
standing in the closing area or may enter the
closing area during the closing process.
There is a risk of injury.
Make sure that nobody is in the vicinity of
the closing area during the closing process.
Use one of the following options to stop the
closing process:
Rpress theTbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the close button or STOP button on
the tailgate.
Rpull the handle on the tailgate.
GDANGER
Combustion engines emit poisonous
exhaust gases such as carbon monoxide.
Exhaust gases can enter the vehicle interior
if the tailgate is open while the engine is
running, especially if the vehicle is in
motion. There is a risk of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
Cargo compartment77
Opening and closing
Z

There is a risk of fire and an accident.
Release the parking brake fully before driv-
ing off.
!Do not warm up the engine while station-ary. Pull away immediately. Avoid highengine speeds and full throttle until theengine has reached its operating tempera-ture.
In vehicles with automatic transmission,engage positions P and R only when thevehicle is stationary.
Where possible, avoid spinning the drivewheels when pulling away on slippery roads.You could otherwise damage the drive train.
!Mercedes-AMG vehicles:avoid full-loadoperation and engine speeds greater than5000 rpm when the engine is cold. Thishelps to protect the engine and avoidsuncomfortable driving.
Key positions
SmartKey
ZTo remove the SmartKey
(shift the transmission to position])
GPower supply for some consumers, suchas the windshield wipers
HIgnition (power supply for all consumers)and drive position
ITo start the engine
iThe SmartKey can be turned in the ignitionlock even if it is not the correct SmartKeyfor the vehicle. The ignition is not switchedon. The engine cannot be started.
Start/Stop button
General notes
Vehicles with KEYLESS-GO are equipped withSmartKeys featuring the integrated KEYLESS-GO function and a detachable Start/Stop but-ton.
A check which periodically establishes a radioconnection between the vehicle and theSmartKey determines whether a valid Smart-Key is in the vehicle. This occurs, for example,when starting the engine.
When you insert the Start/Stop button intothe ignition lock, the system needs approx-imately two seconds recognition time. You canthen use the Start/Stop button.
Pressing the Start/Stop button several timesin succession corresponds to the differentSmartKey positions in the ignition lock. This isonly the case if you are not depressing thebrake pedal.
If you depress the brake pedal and press theStart/Stop button, the engine starts immedi-ately.
To start the vehicle without actively using theSmartKey:
Rthe Start/Stop button must be inserted inthe ignition lock
Rthe SmartKey must be in the vehicle
Rthe vehicle must not be locked with theSmartKey or KEYLESS-GO (Ypage 70)
Do not keep the KEYLESS-GO key:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey.
Rwith metallic objects, e.g. coins or metalfoil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the SmartKeyremote control or with KEYLESS-GO, after ashort time:
Ryou will not be able to switch on the ignitionwith the Start/Stop button.
Ryou will no longer be able to start the enginewith the Start/Stop button until the vehicleis unlocked again.
If you lock the vehicle centrally using the but-ton on the front door (Ypage 75), you cancontinue to start the engine with the Start/Stop button.
Driving125
Driving and parking
Z

Inhaling these exhaust gases is hazardous to
health and can result in poisoning. There is a
risk of fatal injury. Therefore, never leave the
engine running an enclosed space without
adequate ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system
or parts of the engine that heat up. There is
a risk of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
General notes
During a cold start, the engine runs at higherspeeds to enable the catalytic converter toreach its operating temperature. The sound ofthe engine may change during this time.
Automatic transmission
XShift the transmission to position](Ypage 134).The transmission position indicator on themultifunction display shows](Ypage 134).
iYou can start the engine in transmissionpositions]and\\.
Starting procedure with the SmartKey
To start the engine using the SmartKey insteadof the Start/Stop button, pull the Start/Stopbutton out of the ignition lock.
XTurn the SmartKey to positionIin the igni-tion lock (Ypage 125) and release it assoon as the engine is running.
Starting procedure with the Start/
Stop button
The Start/Stop button can be used to start thevehicle manually without inserting the Smart-Key into the ignition lock. The Start/Stop but-ton must be inserted in the ignition lock and
the SmartKey must be in the vehicle. Thismode for starting the engine operates inde-pendently of the ECO start/stop automaticengine start function.
You can start the engine if a valid SmartKey isin the vehicle. Switch off the engine andalways take the SmartKey with you when leav-ing the vehicle, even if you only leave it for ashort time. Pay attention to the importantsafety notes.
XDepress the brake pedal and keep itdepressed.
XPress the Start/Stop button once(Ypage 125).The engine starts.
Starting procedure via smartphone
Observe the important safety notes on startingthe engine (Ypage 126).
You can also start your engine via your smart-phone from outside the vehicle. In this case,the previously selected climate control settingis activated. In this way you can cool or heatthe interior of the vehicle before starting thejourney.
Only start the engine via your smartphone if itis safe to start and run the engine where yourvehicle is parked.
Observe the legal stipulations in the areawhere your vehicle is parked. Engine start viasmartphone may be limited to certain coun-tries or regions.
You can execute a maximum of two consecu-tive starting attempts via your smartphone. Ifyou insert the SmartKey into the ignition lock,you can carry out two more starting attempts.
Once you have started the engine, you canswitch the engine off via your smartphone atany time.
You can only start the engine via your smart-phone if:
Rthe SmartKey is in the ignition lock
Rpark position]is selected
Rthe accelerator pedal is not depressed
Rthe alarm for the anti-theft alarm system isnot set
Rthe panic alarm is not activated
Rthe hazard warning lamps are switched off
Rthe hood is closed
Driving127
Driving and parking
Z

ProblemPossible causes/consequences andPPSolutions
The engine is not run-ning smoothly and ismisfiring.
There is a malfunction in the engine electronics or in a mechanicalcomponent of the engine management system.
XOnly depress the accelerator pedal slightly.Otherwise, non-combusted fuel may get into the catalytic con-verter and damage it.
XHave the cause rectified immediately at a qualified specialistworkshop.
The coolant tempera-ture gauge shows avalue above 248 ‡(120 †). The warninglamp may also be onand a warning tone maysound.
The coolant level is too low. The coolant is too hot and the engine isno longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant tocool down.
XCheck the coolant level (Ypage 276). Observe the warning notesas you do so and add coolant if necessary.
Notes on towing vehicles
The vehicle is not suitable for attaching towbar systems, such as those used for flat tow-ing or dinghy towing.
Attaching or using tow bar systems may resultin damage to the vehicle.
When towing a vehicle with tow bar systems,safe driving characteristics cannot be guaran-teed for the towing vehicle or the towed vehi-cle.
The vehicle/trailer combination may swerve.
Observe the permissible towing methods(Ypage 300) and the notes on towing withboth axles on the ground (Ypage 300).
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to changethe drive program. Depending on the drive pro-gram selected the following vehicle character-istics will change:
Rthe drive (engine and transmission manage-ment)
Rthe sound of the exhaust system (vehicleswith sports exhaust system)
Rthe steering
Rthe availability of the ECO start/stop func-tion
Rthe climate control
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. For further information aboutstarting the engine, see (Ypage 126).
XPress DYNAMIC SELECT buttonCas manytimes as necessary until the desired driveprogram is selected.The selected drive program appears in themultifunction display. After five seconds, thedisplay goes out and the status symbol ofthe selected drive program appears.
In addition, the current drive program set-tings are displayed briefly in the multimediasystem display.
iIn a few countries, the ECO start/stopfunction is deactivated at the factory due tothe available fuel grade. In this case, theECO start/stop function is not available inany drive program, regardless of the displayin the multimedia system display.
132DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking

Transmission positions
EPark position
This prevents the vehicle from roll-ing away when stopped.
Only shift the transmission to posi-tion]when the vehicle is station-ary. The parking lock should not beused as a brake when parking.Always apply the electronic parkingbrake in addition to the parking lockin order to secure the vehicle.
In the event of a malfunction of thevehicle's electronics, the transmis-sion may lock in position]. Havethe vehicle electronics checkedimmediately at a qualified specialistworkshop.
Park position]is automaticallyengaged if:
Ryou switch off the engine usingthe SmartKey and remove theSmartKey
Ryou switch off the engine usingthe SmartKey or using the Start/Stop button and open the driver'sdoor or front-passenger door
Ryou open the driver's door whenthe vehicle is stationary or whendriving at a very low speed andthe transmission is in position[or^
FReverse gear
Only shift the transmission intoposition^when the vehicle is sta-tionary.
DNeutral
Do not shift the transmission to\\while driving. The automatic trans-mission could otherwise be dam-aged.
No power is transmitted from theengine to the drive wheels.
Releasing the brakes will allow youto move the vehicle freely, e.g. topush it or tow it.
If ESP®is deactivated or faulty: shiftthe transmission to position\\ifthe vehicle is in danger of skidding,e.g. on icy roads.
If you switch the engine off with thetransmission in position^or[,the automatic transmission shifts to\\automatically.
!Coasting in neutral\\maycause damage to the drive train.
:Drive
The automatic transmissionchanges gear automatically. Allforward gears are available.
Driving tips
Changing gear
The automatic transmission shifts through theindividual gears automatically when it is intransmission position[. This automatic gearshifting behavior is determined by:
Rthe selected drive program
Rthe position of the accelerator pedal
Rthe road speed
Accelerator pedal position
Your style of driving influences how the auto-matic transmission shifts gear:
Rlittle throttle: early upshifts
Rmore throttle: late upshifts
Automatic transmission137
Driving an d parking
Z

Before the engine speed reaches the red area,an upshift indicator will be shown in the multi-function display.
XShift to recommended gearCwhen mes-sageDis shown in the multifunction dis-play.
Kickdown
XFor maximum acceleration, depress theaccelerator pedal beyond the pressurepoint.The automatic transmission shifts to a lowergear depending on the engine speed.
XShift back up once the desired speed isreached.
During kickdown, you cannot shift gears usingthe steering wheel paddle shifters.
If you apply full throttle, the automatic trans-mission shifts up to the next gear when themaximum engine speed is reached. This pre-vents the engine from overrevving.
Mercedes-AMG vehicles:it is only possibleto use kickdown in temporary manual driveprogramM. When manual drive programMispermanently activated, kickdown is not possi-ble.
Problems with the transmission
ProblemPossible causes/consequences andPPSolutions
The transmission hasproblems shifting gear.The transmission is losing oil.
XHave the transmission checked at a qualified specialist workshopimmediately.
The acceleration abilityis deteriorating.
The transmission nolonger shifts into all ofthe gears.
Reverse gear can nolonger be engaged.
The transmission is in emergency mode.
XStop the vehicle.
XShift the transmission to position].
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to position[.
XHave the transmission checked at a qualified specialist workshopimmediately.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. Risk of fire and
explosion by improper handling of fuel.
You must avoid fire, open flames, smoking
and creating sparks. Switch off the ignition
before refueling and, if present, switch off
the auxiliary heating.
142Refueling
Driving and parking